Nimiq
is a simple Windows application that lets you subscribe to podcast feeds.

Azureus

Azureus
is a BitTorrent client that has a plugin for podcasting. It is a much more configurable
BitTorrent client, and therefore is more complex. For detailed instructions on how
to set up Azureus with this plugin, check out the Camtasia video below. It gives
you step-by-step instructions, including how to configure your firewall and NAT
router.